/*
 * Copyright Konstantin Triger <kostat@gmail.com> 
 * 
 * This file is part of Jaque 2 JPA - JAva QUEry 2 JPA library <http://code.google.com/p/jaque/>.
 * 
 * Jaque is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Jaque is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package jaque.jpa;

import jaque.expressions.*;

final class ExpressionNormalizer extends BaseDbExpressionVisitor {

	public static final ExpressionNormalizer Instance = new ExpressionNormalizer();

	private ExpressionNormalizer() {
	}

	@Override
	public Expression visit(BinaryExpression e) {
		if (e.getExpressionType() == ExpressionType.Conditional) {
			return Expression.logicalOr(Expression.logicalAnd(e.getOperator(),
					e.getFirst()), Expression.logicalAnd(Expression
					.logicalNot(e.getOperator()), e.getSecond()));
		}

		return super.visit(e);
	}
}
